Method and machine for producing metallic wedges



APPLICATION FILED JUNE 1. I920.

Patented Nov. 8, 1921.

2 SHEETSSHEET I.

I, 1920. 1,396,042. Patented Nov. 8, 1921.

2 SHEETSSH a li I) UNITED STATES PATENT OFFICE.

PHILIP W. J'ONES, OF NEWARK, OHIO.

Specification of Letters Patent.

Patented Nov. 8, 1921.

Application filed June 1, 1920. Serial No. 385,406.

T 0 all whom it may concern Be it known that I, PHILIP W. J oNEs,a citizen of the United States, residing at Newark, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Methods and Machines for Producing Metallic Wedges, of which the following is a specification.

This invention relates broadly to an improved method and machine for producing metallic wedges, and has foi' its object to provide for the economical and rapid output of metallic wedges, pins and other like objects in an improved manner over machines and methods heretofore employed.

The invention consists broadly in providing stock pieces of substantially triangular form, in passing such pieces vertically through a pair of initial rolls which serve Where requlred to reduce the height of the pieces and thereby increase their thickness, and in subsequently passing the pieces through a pair of forming rolls, whereby the desired and completed shape will be given the pieces, thus, through the medium of the initial rolls the thickness of the stock is increased where necessary to the desired extent, a feature which obviates the necessity of employin the appreciably thicker stock hitherto use p For a further understanding of the invention reference is to be had to the following description and to the accompanying drawin in which:

igure 1 is a top plan view of the rolling machine, a

Fig. 2 is a side elevation thereof,

Fig. 3 is a vertical longitudinal sectional view taken through the machine,

Fig. 4 is a detail view of one of the forming rolls, v

Fig. 5 is a detail perspective view showing the stock in its form prior to the introduction thereon into the rolling machine,

Fig. 6 is a similar view disclosing the shape of the stock after the same is passed through the thickening rolls, and

Fig. 7 is a perspective view showing the completed stock after its passage through the forming rolls.

In accordance with the features of the present invention provision is made for the simple, efiicient and economical production of metallic wedges or pins, which may be employed in very numerous capacities,however,

it is my particular aim to produce wedge pins of the kind employed in connecting brake shoes to the pivoted beams of brake riggings, but it will be understood, however, that the invention is not limited in its scope to the manufacture of pins of this nature, but may be employed for the purpose of producing metallic wedge members generally. The present method of forming wedge pins or the like according to the principle of my invention may be best understood by reference to a machine upon which the same may be practised, although it is to be understood that the method is not merely the function of the machine but may be practised in whole or in part by manual or independent manipulation of certain of the parts. Therefore, for the purpose of disclosing both the method and a machine upon which the same may be carried out, I will now proceed to describe the apparatus illustrated in the accompanying drawings.

The numeral 1 designates my improved rolling machine in its entirety, and the latter consists primarily of spaced sets of housings 2 and 3, the same being equipped with vertical slots 4 and 9 and in the slots 4 are slidably mounted bearings 5 for the reception of the stud shaft ends 6 of a pair of thickening rolls 7, the bearings 5-being ad justable vertically by means of manually operated screws 8 threaded in the housings 2; The housings 3 are identical in construction to the housings 2, and it will be observed that the housings 3 are provided with the elongated slots 9 in which are vertically situated the bearings 10, which latter serve a to rotatably receive the reduced shaft ends 11 of a pair of vertically arranged upper and lower forming rolls 12 and 12 respectively, the bearings 10 being adjustable vertically by means of the manually operated screws 13 carried in the housings 3.

Through the provision of these rolls, and cooperative mechanism, the wedge pins 14 are capable of being produced. These pins are initially formed from the substantially triangular or trapeziform stock 15 shown in Fig. 5, which stock is passed vertically between the rolls 7, so that the general thick- .ness thereof will be increased, after which the stock is passed through the forming rolls and is given its desired shape or con- 5, is considerably reduced, the thickness of the stock being enlarged, and likewise the general length thereof. Thus, through the medium of the thickening rolls it is possible to employ stock of relatively thin gage, a feature which materially contributes in lowering the cost of production, over methods wherein the thickening rolls are not present. I

To effect the rotation of the rolls, the bearing blocks 3 have suitably journaled in connection therewith a transversely extending power shaft 17, to which power from any suitable source may be applied for the purpose of effecting the driving of the machine.

This shaft is provided with a sprocket 18,

- over which is trained an endless chain 19,

the latter being also trained over a slightly small sprocket 20 carried upon one of the journaling shafts of the lower of the thickening rolls 7. This roll is also equipped with a gear 21, which meshes with a similar gear 22 carried upon the journaling shaft of the upper roll 7. Thus, by the instrumentality of the transmission described it will be manifest that power will be imparted to the rolls 7 to cause the latter to rotate in the directions indicated by the arrows in Fig. 3. The shaft 17 is also equipped with a pair of sprockets 23, which'are of the same size as the sprocket 18. Similar sprockets 24 are located in the forward part of the machine, and endless chains 25 are trained over the sprockets 23 and 24 in the manner clearly shown in the various figures of the drawing. Thus, upon the rotation of the shaft 17 power will be imparted to the chains 25 to effect their advance lengthwise of the machine. If desired, idler sprockets 26 may be journaled in connection with the housings 2 for the purpose of taking up slack within the chains 25 and to also separate the lower runs of the latter from the lower of the rolls 7.

These chains 25 are connected by transverse flights 27, which are of flat construction and are arranged to pass through or between the rolls 7, the latter being spaced a suflicient distance to permit of this function. The flights 27 pass 'over fixed guides 28 and 29 which are stationarily mounted in any suitable manner in connection with the machine, the guides 28 being situated in advance of the rolls 7 and the guides 29 to the rear of said rolls. Thus, in operation the stock pieces 15 are positioned either manually or automatically within the channel of the guide 28 in a substantially vertical manner, and while thus positioned the operation of the machine will result in causing any one of the flights 27 to engage with the vertical edge of the stock, so that the latter will 'be caused to travel rearwardlyof the machine in unison with the movement of the chains This results in causing the stock to be forced between the grooves 16 and in this manner the long inclined surface or hypotenuse of the stock 15 will be flattened at desired points so that the contour disclosed in Fig. 6 will be assumed. Owing to the lengthening of the stock during its passage through the thickening rolls 7, it is necessary that the said rolls will revolve at a Slightly greater speed than the speed of linear travel on the part of the chains 25. This is accomplished by relatively proportioning the sprockets 18 and 20, the latter being of lesser diameter than the former in order that the necessary increased rotational speed on the part of the rolls 7 may be effected. It will thus be apparent that through the mechanism so far described the stock 15 will. be acted upon in such manner by the thickening rolls that its effective thickness will be materially increased, a feature which admits of the use of thinner stock and hence an appreciable reduction in production costs.

After the stock has been acted upon by the thickening rolls, the same is ejected into the trough of the guide 29, whereupon the same is again engaged by the flight 27 which forced the same into the thickening rolls. The'stock then falls on its side, due to its rounded edge formand the continued longitudinal movement of this flight then conducts this semi-formed wedge pin longitudinally and rearwardly of the machine and into engagement with the final forming rolls 12 12.. These forming rolls are driven in the direction indicated by the arrows by providing the shaft 17 with a sprocket 30, which sprocket is adapted to receive an endless chain 31, the latter passing over a reduced sprocket 32 formed upon the outer shaft end of the lower formingroll 12. Motion is transmitted from this roll to the upper roll by providing the shaft ends of said rolls with spur gears 33 which effect the necessary rotation of said forming rolls. It will be noted that the sprocket 32 is somewhat I receive the flatly positioned stock discharged ening rolls, an

ducing the elongated wedge pin 14 shown in Fig. 7. It will be understood that by rotating the rolls 12 at greater speed thanthat of the chain 25, the elongation of the stock within the rolls 12 will not interfere with and operation of the the movements flights 27.

From the foregoing description taken in conjunction with the accompanyin sheets of drawings, it will be manifest that the present invention provides simple, efiicient and economical means and methods for carrying out the several ends of the invention, and that finally completed wedge pins may be produced at a cost appreciabl below prior methods. Furthermore, b t e provision of the thickening rolls the en s of the invention are primarily eflected or carried out, since these elements serve in the capacit above. mentioned of thickening the stock handled thereby so that initially thinner stock may be employed overwhat has been used in the past, a feature which primarily effects a reduced cost in wedge pin manufacture. It will be understood that the thickening rolls engage with the stock in such manner as to increase the thickness of said stock toward the rear portion or in other words, at such positions where the extra thickness is desired, and, furthermore, owin to the rounded edge formation ofthe stoc after the latter passes through the rolls 7, the same will fall on its side and will be horizontally conveyled into engagement with the finishing re 5.

What is claimed is:

1. In a rollin machine, a-pair of thicka pair of forming rolls, guides for leading material into juxtaposition with respect to said rolls, conveying means for causing the lon 'tudinal travel of the pieces along said gui es, and-means for rotating said rolls at a greater speed than the linear travel of said conveying means.

2. In a machine for producing metallic wedge'members, a pair of thickening rolls, means operating to pass relatively -thin trapeziform stock pieces, while positioned on edge, through said rolls, whereby the thickness of said pieces will be increased where necessary over their initial stock thickness, a pair of forming rolls, and means operating to permit of the turning of said stock pieces upon the sides thereof for presentatlon to the forming rolls.

3. In a machine for producing metallic wedge members, a pair of forming rolls,

guides situated in advance of said rolls and operating to present substantially trapeziform stock pieces situated on vertical edges to the action of said rolls, a pair of forming rolls, and guides situated between said thickening and forming rolls, said latter guides serving to permit said stock pieces to fall upon their sides, after the latter haw been ejected from the thickening rolls, and to be presented in such positions to the action of the forming rolls.

4. In a machine for producing metallic wedge members, a pair of rotatabl journaled thickening rolls having registering annular grooves provided therein, means for introducing substantially trapeziform stock pieces situated on the vertical edges thereof into said grooves, a pair of forming rolls, one of said rolls being provided with an arcuate recess, and means for introducing said stock ieces, after being ejected from the thickening rolls, successively into said recess, said latter means serving to permit said stock pieces to be situated on the sides thereof when introduced into said recess and placed between the forming rolls.

' thickening rolls and into the grooves thereof,

a guide situated between said thickening and forming rolls and capable of receiving the stock pieces discharged from said thickening rolls, said grooves serving to produce rounded edges upon said stock pieces to permit the same to lie on the sides thereof while vpassing along said last named guide, said conveyer serving to force the pieces longitudinally of said latter guide, and at least one of said forming rolls being provided with a wedge forming recess capable of receiving said stock pieces discharged from the latter guide and capable thereby of causing said pieces to assume substantially the shape and configuration of said recess.

. In testimony whereof I aflix my signature.

PHILIP W. JONES. 

